Ключевые слова: builder, building, busy, caucasian, chemical, construction, development, employment, energy, engineer, engineering, equipment, factory, formwork, hard, hardhat, helmet, industrial, industry, job, labor, laborer, machine, machinery, male, manual, manufacturing, mechanic, metal, occupation, people, person, petrochemical, plant, portrait, power, professional, protection, refinery, safety, site, steel, storage, technology, tool, work, worker, workman, workplace,